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Old 07-20-2004, 02:35   #1 (permalink)
Krissy
 
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Need some advice on Pacemaker Headers

Hi all :o) **Sorry if I've put this Q in the wrong place** but.....

I just need some advice on what to get. My EA GhiaII (chip'd) 3.9mpfi has a 2˝ sports from CAT back and now I'm looking at getting Pacemaker headers. I can get a standard set for $360 or Competition (Tuned Length) for $410.

I just need to know what the differences are. Both are HPC. But what exactly does "tuned length" mean? And how does being "tuned length" make a difference to my car? Any advice would really be appreciated as I'm on a low budget BUT if it really is a better way to go to get the competition ones, I'll spend the money but only if I really need to. Otherwise.......

Thanks pple
Krissy :D
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Old 07-20-2004, 18:48   #2 (permalink)
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Re: Need some advice on Pacemaker Headers

The idea behind tuned length headers is that each of the primary tubes is of equal or ‘tuned’ length, making the distance the exhaust gasses has to travel down each of them exactly or as close to the same as possible. This also allows for more equal scavenging across all 6 of your cylinders. For the extra $50 it is well worth getting a set off tuned length pacemaker headers as the power difference between a standard header and a tuned length one is phenomenal, equating to several kw’s. Torque is another great issue there in that a tuned length system produces more torque across the rev range. All in all with a set of Pacemaker tuned length you’re looking at better exhaust scavenging which means more power and better fuel economy.

Another thing to note is the way Pacemaker use a pipe over cone design with all their headers. This helps to eliminate turbulence inside the collector cone and improved gas flow. Again, improved gas flow means more power.

I got a system nocked up with Pacemaker tuned length headers, high flow sports stainless cat and a 2 1/2 inch high flow sports exhaust system with high flow mufflers, did a new intake setup with a sequential bonnet scoop, K&N filter and thematic fans and that alone was producing 118.6rwkw 683.7 Nm of torque on the dyno. These things where only around the 90rwkw range stock so that’s a fair gain and most of it from the exhaust. Don’t know what she’s pulling now cause I haven’t had her tuned since I got the quench head fitted and she’s able to go up against commo V8 5L’s.
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Old 07-20-2004, 19:17   #3 (permalink)
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Re: Need some advice on Pacemaker Headers

i'll be looking at a set of these in the very near future as well.

-FPV_FPR-, if or when you get some, let me know your thoughts about them, i'll keep looking at some others in the meantime and save some more dosh $$
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Old 07-20-2004, 19:54   #4 (permalink)
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Re: Need some advice on Pacemaker Headers

Hi Krissy, have you considered Jim Mock Motorsport Headers?
If you look in the I6 Tech area there is heaps of info on different headers.
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Old 07-20-2004, 22:40   #5 (permalink)
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Re: Need some advice on Pacemaker Headers

"defective" - thanks for all that info, it's a great help :o) I've never put mine on the Dyno, even after I got it chip'd. I wouldn't know what my rwkw were b4 or after. My intake setup is just an XH snorkel & BMC filter. I changed to a POD a few months ago but lost so much power. Although, the noise gain was quite nice. For the first time, my car turned heads thanks to the noise

(BTW, the primaries on the Pacy's are 1˝" diameter. With all the reading I've done, I think I remember that being a good thing yeah??)

"xcel" - I'll let you know how I go when I get them fitted.

"tikfd6" - I've read ALOT about JMM .. (am I right that he's in Altona somewhere?) At one stage I was looking into his DEV kits. I've heard from many people that his headers are highly priced. That throws me back because I don't want to spend a fortune on them. I think I'll go the Pacey's. All up $560 fitted. That's within my budget at the moment.
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Old 07-21-2004, 03:03   #6 (permalink)
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Re: Need some advice on Pacemaker Headers

I just threw a set of tuned length pacemakers on my EF. i think $560 fitted is a bit steep i paid $360 but labour was free ($200 labour for 8 bolts and some welding, expensive)
-few tips reuse your original metal gasket will last heaps longer than the one supplied
-make sure whoever does it for you can weld your cat up good because you need to take off about a foot at each end
-while the cats off punch all that honeycomb shit out of it, EPA wont like it but whose gonna know unless they pull the whole exhaust apart
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Old 07-21-2004, 03:51   #7 (permalink)
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Re: Need some advice on Pacemaker Headers

$200 for the bolts and welding, you where ripped big time.

My JMM Headers cost me about $430, and abotu $50 for fitting.
Yes they are in Altons, Krissy best off giving them a ring, or drop in for a chat, Jim and Brenden are very helpful and wont stuff you around.
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Old 07-21-2004, 19:42   #8 (permalink)
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Re: Need some advice on Pacemaker Headers

no i didnt pay labour did it myself, thats what im saying the $560 seems pretty dear considering the actual price of the headers ($360) maybe $400 would be a more appropriate price fitted if ya cant do it yaself
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Old 07-22-2004, 01:58   #9 (permalink)
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Re: Need some advice on Pacemaker Headers

Pllllllllllease dont rip your guts out of the cat , it does nothing (maybe decreases power) and the fines are phenominal
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Old 07-22-2004, 04:24   #10 (permalink)
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Re: Need some advice on Pacemaker Headers

Quote:
Originally Posted by redGhia
Pllllllllllease dont rip your guts out of the cat , it does nothing (maybe decreases power) and the fines are phenominal
I gained a whole 3 rwkw with a gutted Cat on my old car which is hardly worth the huge fine. So i fitted a High Flo cat which gained 1rwkw over the standard cat.
Pffft i would even chane the cat its not worth the $$$$'s IMO
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